you should NOT be experiencing any delay or lag when loading PC.. Granted it is a rather large homepage as far as file/download size and can vary depending on what theme you are using as well. Try switching themes, try the default vB one as well.
PC uses a cdn ( yes the infamous CloudFlare that many of you have seen before ) to cache images, javascript and other static parts of the site. If you are not allowing caching on your computer, as some images and stuff is stored there as well, you are basically forcing your comp to download them each time slowing up your connection and the page load speed. You may also be on the edge for processing / RAM usage on your computer. Some javascript and stuff is run by your machine and it could be waiting for that to process.
There are also time when CF has issues (attacks, bad equipment, etc) and will route people to a further end-point then normal adding to some page load time (rare, usually doesn't add much time)
Also as noted, it could be on your end.. clear cache (force a fresh reload of the cdn content) and cookies, log out, then back in, close and reopen your browser, use a different browser - find what works best for you.
if all else fails, let the admins know of your problem by send us a tracrt (google it to learn how to trace route a connection) to www.pokecommunity.com via PM.